An exhibition on various aspects of the 425 years of the Festes de Sant Roc in Barcelona's cathedral quarter, the oldest folk festival in honour of a saint in the city. The vision began in 1519 with the proclamation of Sant Roc (St Roch) as Barcelona's patron saint and continued until 1563, when the city council of that time, the Consell de Cent (Council of One Hundred) made a city vow to the saint. When locals founded a brotherhood known as the ‘Confraria de Sant Roch de la Plassa Nova’ in 1589, it marked the start of this festival, which has changed a lot over four centuries. Today the Festes de Sant Roc are a firmly established tradition and part of Barcelona's festival heritage.